<script setup>
import {
    Edit,
    Delete
} from '@element-plus/icons-vue'

import { ref, onMounted } from 'vue'
import * as categoryApi from '@/api/categoryApi.js'
import * as articleApi from '@/api/articleApi.js'
import { ElMessage, ElMessageBox } from 'element-plus'
import { QuillEditor } from '@vueup/vue-quill'
import '@vueup/vue-quill/dist/vue-quill.snow.css'
import { Plus } from '@element-plus/icons-vue'
import { useTokenStore } from '@/stores/token'

const tokenStore = useTokenStore()

//文章分类数据模型
const categorys = ref([])

//用户搜索时选中的分类id
const categoryId = ref('')

//用户搜索时选中的发布状态
const state = ref('')

//文章列表数据模型
const articles = ref([])

//分页条数据模型
const pageNum = ref(1)//当前页
const total = ref(20)//总条数
const pageSize = ref(3)//每页条数

//当每页条数发生了变化，调用此函数
const onSizeChange = (size) => {
    pageSize.value = size
    getArticleList()
}
//当前页码发生变化，调用此函数
const onCurrentChange = (num) => {
    pageNum.value = num
}

onMounted(() => {
    getCategoryList()
    getArticleList()
})


//获取当前分类列表
const getCategoryList = async () => {
    const res = await categoryApi.getArticleCategoryList()
    if (res.code === 0) {
        categorys.value = res.data
    } else {
        ElMessage.error(res.message)
    }
}

//获取文章列表
const getArticleList = async () => {
    const res = await articleApi.getArticleList({
        pageNum: pageNum.value,
        pageSize: pageSize.value,
        categoryId: categoryId.value,
        state: state.value
    })
    if (res.code === 0) {
        articles.value = res.data.items
        total.value = res.data.total
    } else {
        ElMessage.error(res.message)
    }
}

//文章窗口
//控制抽屉是否显示
const visibleDrawer = ref(false)
//控制窗口类型
const drawerType = ref('')
//添加表单数据模型
const articleModel = ref({
    title: '',
    categoryId: '',
    coverImg: '',
    content: '',
    state: ''
})
//控制窗口标题
const drawerTitle = ref('')
//打开添加文章窗口
const showAddArticle = () => {
    drawerTitle.value = '添加文章'
    drawerType.value = 'add'
    visibleDrawer.value = true
    articleModel.value = {
        title: '',
        categoryId: '',
        coverImg: '',
        content: '',
        state: ''
    }
}

//打开编辑文章窗口
const showEditArticle = (row) => {
    drawerTitle.value = '编辑文章'
    drawerType.value = 'edit'
    visibleDrawer.value = true
    articleModel.value = {
        ...row
    }
}

//提交文章表单
const addorUpdateArticle = async (data) => {
    if(data === 'release'){
        articleModel.value.state = '已发布'
    }else{
        articleModel.value.state = '草稿'
    }
    if (drawerType.value === 'add') {
        addArticleForm()
    } else {
        editArticleForm()
    }
}

//添加文章
const addArticleForm = async () => {
    const res = await articleApi.addArticle(articleModel.value)
    if (res.code === 0) {
        ElMessage.success('添加成功')
        visibleDrawer.value = false
        getArticleList()
    } else {
        ElMessage.error(res.message)
    }
}

// 修改文章
const editArticleForm = async () => {
    const res = await articleApi.editArticle(articleModel.value)
    if (res.code === 0) {
        ElMessage.success('修改成功')
        visibleDrawer.value = false
        getArticleList()
    } else {
        ElMessage.error(res.message)
    }
}

// 删除文章
const deleteArticle = async (row) => {
    ElMessageBox.confirm('确定删除该文章吗?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
    }).then(async () => {
        const res = await articleApi.deleteArticle(row.id)
        if (res.code === 0) {
            ElMessage.success('删除成功')
            getArticleList()
        } else {
            ElMessage.error(res.message)
        }
    }).catch(() => {
        ElMessage.info('已取消删除')
    })
}

//上传成功
const uploadSuccess = (res) => {
    articleModel.value.coverImg = res.data
}

</script>
<template>
    <el-card class="page-container">
        <template #header>
            <div class="header">
                <span>文章管理</span>
                <div class="extra">
                    <el-button type="primary" @click="showAddArticle">添加文章</el-button>
                </div>
            </div>
        </template>
        <!-- 搜索表单 -->
        <el-form inline>
            <el-form-item label="文章分类：" style="width: 300px;">
                <el-select placeholder="请选择" v-model="categoryId">
                    <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
                    </el-option>
                </el-select>
            </el-form-item>

            <el-form-item label="发布状态：" style="width: 300px;">
                <el-select placeholder="请选择" v-model="state">
                    <el-option label="已发布" value="已发布"></el-option>
                    <el-option label="草稿" value="草稿"></el-option>
                </el-select>
            </el-form-item>
            <el-form-item>
                <el-button type="primary" @click="getArticleList">搜索</el-button>
                <el-button @click="categoryId = ''; state = ''; getArticleList()">重置</el-button>
            </el-form-item>
        </el-form>
        <!-- 文章列表 -->
        <el-table :data="articles" style="width: 100%">
            <el-table-column label="文章标题" width="400" prop="title">
                <template #default="{ row }">
                    <el-link :underline="false" type="primary" @click="showEditArticle(row)">{{ row.title }}</el-link>
                </template>
            </el-table-column>
            <el-table-column label="分类" prop="categoryId">
                <template #default="{ row }">
                    <span>{{ categorys.find(c => c.id === row.categoryId)?.categoryName }}</span>
                </template>
            </el-table-column>
            <el-table-column label="发表时间" prop="createTime"> </el-table-column>
            <el-table-column label="状态" prop="state"></el-table-column>
            <el-table-column label="操作" width="100">
                <template #default="{ row }">
                    <el-button :icon="Edit" circle plain type="primary" @click="showEditArticle(row)"></el-button>
                    <el-button :icon="Delete" circle plain type="danger" @click="deleteArticle(row)"></el-button>
                </template>
            </el-table-column>
            <template #empty>
                <el-empty description="没有数据" />
            </template>
        </el-table>
        <!-- 分页条 -->
        <el-pagination v-model:current-page="pageNum" v-model:page-size="pageSize" :page-sizes="[3, 5, 10, 15]"
            layout="jumper, total, sizes, prev, pager, next" background :total="total" @size-change="onSizeChange"
            @current-change="onCurrentChange" style="margin-top: 20px; justify-content: flex-end" />


        <!-- 抽屉 -->
        <el-drawer v-model="visibleDrawer" :title="drawerTitle" direction="rtl" size="50%">
            <!-- 添加文章表单 -->
            <el-form :model="articleModel" label-width="100px">
                <el-form-item label="文章标题">
                    <el-input v-model="articleModel.title" placeholder="请输入标题"></el-input>
                </el-form-item>
                <el-form-item label="文章分类">
                    <el-select placeholder="请选择" v-model="articleModel.categoryId">
                        <el-option v-for="c in categorys" :key="c.id" :label="c.categoryName" :value="c.id">
                        </el-option>
                    </el-select>
                </el-form-item>
                <el-form-item label="文章封面">

                    <el-upload class="avatar-uploader" :auto-upload="true" :show-file-list="false"
                        action="/api/upload"
                        name="file"
                        :headers="{ Authorization: tokenStore.token }"
                        :on-success="uploadSuccess"
                    >
                        <img v-if="articleModel.coverImg" :src="articleModel.coverImg" class="avatar" />
                        <el-icon v-else class="avatar-uploader-icon">
                            <Plus />
                        </el-icon>
                    </el-upload>
                </el-form-item>
                <el-form-item label="文章内容">
                    <div class="editor">
                        <quill-editor theme="snow" v-model:content="articleModel.content" contentType="html">
                        </quill-editor>
                    </div>
                </el-form-item>
                <el-form-item>
                    <el-button type="primary" @click="addorUpdateArticle('release')">发布</el-button>
                    <el-button type="info" @click="addorUpdateArticle('draft')">草稿</el-button>
                </el-form-item>
            </el-form>
        </el-drawer>
    </el-card>
</template>
<style lang="scss" scoped>
.page-container {
    min-height: 100%;
    box-sizing: border-box;

    .header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
}

/* 抽屉样式 */
.avatar-uploader {
    :deep() {
        .avatar {
            width: 178px;
            height: 178px;
            display: block;
        }

        .el-upload {
            border: 1px dashed var(--el-border-color);
            border-radius: 6px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            transition: var(--el-transition-duration-fast);
        }

        .el-upload:hover {
            border-color: var(--el-color-primary);
        }

        .el-icon.avatar-uploader-icon {
            font-size: 28px;
            color: #8c939d;
            width: 178px;
            height: 178px;
            text-align: center;
        }
    }
}

.editor {
    width: 100%;

    :deep(.ql-editor) {
        min-height: 200px;
    }
}
</style>